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Diabolic stratagem
warlord attack 1

Target: one creature

Attack: Strength vs. Reflex

Hit: "1[W] + Strength modifier damage, and the target is marked until the end of your next turn."

Effect: "You grant the target of this attack combat advantage until the start of your next turn. The first attack the target makes against you before the start of your next turn provokes opportunity attacks from you and your allies."[Dr369:54]

Diabolic stratagem is an encounter power available to warlords at 1st level.

Diabolic stratagem was introduced in "Class Acts: Warlord: Devilish tricks from the ancient warmongers of Bael Turath" by Stephen Radney-Macfarland in Dragon #369.

It is considered an average choice, as it relies on the monster following through blindly on given marks in order to perform excessive damage potential. If the GM is tactically alert, it will generally require forcing the monster to attack.[Char-op Warlord]